lodash/mapValues.js

import baseAssignValue from './.internal/baseAssignValue.js';
import baseForOwn from './.internal/baseForOwn.js';

/**
 * Creates an object with the same keys as `object` and values generated
 * by running each own enumerable string keyed property of `object` thru
 * `iteratee`. The iteratee is invoked with three arguments:
 * (value, key, object).
 *
 * @static
 * @since 2.4.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Object} Returns the new mapped object.
 * @see mapKeys
 * @example
 *
 * var users = {
 *   'fred':    { 'user': 'fred',    'age': 40 },
 *   'pebbles': { 'user': 'pebbles', 'age': 1 }
 * };
 *
 * mapValues(users, function(o) { return o.age; });
 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
 */
function mapValues(object, iteratee) {
  const result = {};
  baseForOwn(object, (value, key, object) => {
    baseAssignValue(result, key, iteratee(value, key, object));
  });
  return result;
}

export default mapValues;